    .main{
      color: #666;margin-top: 50px;
    }
    /* 定义keyframe动画，命名为blink */
    @keyframes blink{
      0%{opacity: 1;}
      100%{opacity: 0;} 
    }
    /* 添加兼容性前缀 */
    @-webkit-keyframes blink {
        0% { opacity: 1; }
        100% { opacity: 0; }
    }
    @-moz-keyframes blink {
        0% { opacity: 1; }
        100% { opacity: 0; }
    }
 /*   @-ms-keyframes blink {
        0% {opacity: 1; } 
        100% { opacity: 0;}
    }*/
    @-o-keyframes blink {
        0% { opacity: 1; }
        100% { opacity: 0; }
    }
    /* 定义blink类*/
    .blink{
        color: #dd4814;
        animation: blink 1s linear infinite;  
        /* 其它浏览器兼容性前缀 */
        -webkit-animation: blink 1s linear infinite;
        -moz-animation: blink 1s linear infinite;
        -ms-animation: blink 1s linear infinite;
        -o-animation: blink 1s linear infinite;
    }